The researchers call for experimental studies to further examine the relationship between vitamin D, bone mineral density, and BPPV. Source. Talaat H., et al. Low bone mineral density and vitamin D deficiency in patients with benign positional paroxysmal vertigo. European Archives of Oto-Rhino-Laryngology, 2014.
Columnar epithelium forms the lining of the stomach and intestines. Some columnar cells are specialized for sensory reception such as in the nose, ears and the taste buds of the tongue. Goblet cells (unicellular glands) are found between the columnar epithelial cells of the duodenum.
Now concentrate on the cells and folding of the mucosal epithelium: 1  Surface epithelium: The surface of the stomach is lined by simple columnar cells that secrete mucus. 2  Pits: The wide-bore, funnel shaped pits are also lined by mucus-secreting cells which become shorter as one progresses deeper into the pit.